mechanical seal 1)Excellent quality and reasonable prices 2)Different colors and ... )Certification:Rosh,CE,PAHS mechanical sealOur company,Haining Maqiao Hengshun Rubber Factory,established in 2000, is a specialized manufacturer and exporter ... .We can make all kinds of mold rubber part .The applicable material will be silicone,NR,NBR,SBR,EPDM ETC,We also ...